Kass, D. (1981). Vegetables suitable for association with subsistence maize and beans in the highlands of Guatemala.
استشهاد بنمط شيكاغوKass, D.C.L. Vegetables Suitable for Association With Subsistence Maize and Beans in the Highlands of Guatemala. 1981.
MLA استشهادKass, D.C.L. Vegetables Suitable for Association With Subsistence Maize and Beans in the Highlands of Guatemala. 1981.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.